Saw filer and setter.



H. G. WATKINS. SAW PILR AND SBTTER.

APPLICATION FILED DEC. 4, 19064 Patented Mar. 22, 1910 frame 2 comprisesstandards 7 rising from I close together to embrace the saw, indiearnsHENRY GORDON WATKINS, OF WHI'ITIER, CALIFORNIA.

SAW FILER AND SETTER.

Application led December 4, 1906.

Specication of Letters Patent.

Serial No. 346,339.

To all whomV 'it may concern.'

Be it known that I, HENRY GORDON WAT- itiNs, a citizen of the UnitedStates, residing at Whittier, in the county of Los Angeles, State ofCalifornia, have invented a new and useful Saw Filer and Setter, ofwhich the following is a specification.

The main object of the present invention is to provide a device whereinthe operations of filing and setting a saw can be performed in the sainemachine and by substantially the same operation.

Another object of t-lie invention is to minimize the time required forfiling and setting the saw.

Another object of the invention is to provide forl tiling and settingthe saw in the most accurate manner.

The device is adapted to file and set different sizes of cross cutsaws.

The accompanying drawings illustrate the invention.

Figure 1 is a side elevation of the device. Fig. 2 is a plan. Fig. 3 isa vertical section on line oe3- m3 in Fig. 1. Fig. 4 is a detail sectionof a gage device for the saw.

The device comprises a base or support l, a saw carrier 2 mounted toslide on said base or support, saw tiling devices 3 and saw settingdevices 4. The saw carrier 2 consists of a frame, the bottom member 5 ofwhich is formed as a slide to travel loiigitiidinally in a way 6 in thebase 1. rl`he said bottom member in pairs, and longitudinal bars or topmembers 8 extending along the top of the frame and supported on saidstandards, there being left between these top membersdand between thepairs of standards-7 a space for the reception of the saw, the topmembers being sufficiently cated at 9 in Fig. 3.

Each top member S is formed or provided along its outer edge with a rack10 to eiigage a gear wheel or pinion ll carried by a vertical arbor 12mounted on a bracket or standard 13. said arbor carrying a bevel gear 14engaging with a bevel gear 15 carried by a horizontal arbor 1G alsomounted in said bracket or standard and in a bracket 17 extending up onthe other side of the device. The arbor 16 has an operating handle 19and drives the tiling devices 3, said devices consisting of disks orwheels indepeiidi ently mounted on a fixed arbor 19 on the l .Fig 1, thespaces between the ribs bracket or standard 17,1the said disks or`wheels 3 being provided with, or having secured thereto` bevel gears orother means 2() engaged by a bevel gear or other means 21 on the drivingarbor 16 to operate the said ling devices.

The axis or arbor of the tiling disks or wheels extends parallel to theplane of motion of the saw-carrier so that the planes of rotation of thesaid tiling members are parallel to one anotliei' and perpendicular tothe plane of motion of the saw-carrier.

Each of the filing devices preferably consists of a disk or wheel formedon its pe riphery with obliqnely, spirally or helically arrangedflanges, projections or threads 23 whose surfaces are indented orformedwith ling teeth as at 24 so that as the said disks are rotated inopposite directions by the operating devices above described, theseliling teeth will travel in an oblique trans verse direction withrelation to the plane of the saw held in the carrier, and this motion.combined with the longitudinal niotion o the saw will enable the filingribs to continually tit in and travel with the teeth of the saw as itmoves forward or backward.

A plurality of the filing ribs or projections 23 are provided on eachdisk, arranged at equal circumferential distances, and separated byblank spaces corresponding to the width of one saw tooth, so that in therotat-ion of the disk the tiling ribs will come successively intooperation, but each rib will enter between teeth which are separatedfrom the last tooth operated on by one saw tooth space, the successivelyacting ribs of each disk thus skipping one saw tooth space in passingfrom one rib to the next. These alternate tooth spaces which are notentered by the ribs of onedisk are entered by the ribs of the otherdisk. This is shown in being equal to the space between two saw teeth.The spaces thus skipped by one disk being entered by the ribs of theother disk, the alternate spaces are tiled by the respective disks, thusgiving the alternate direction of sharpening required in saw filing.

The racks 10 on the outside edges of the top members 8 of the carrierframe also engage gears or pinions 25 mounted in standards 26 andcarrying setter disks or devices 4 which are formed with projections orteeth 28, the disks being so set that in their rotation theseprojections will come alternately Patented Mar. 22, 1.910. l

' continuous manner startin into engagement with the Vteeth of the saw,setting or pressing said teeth alternately in opposite directions.

The top members 8 of the carrier frame 2 areprovided with clamp screws29 for clamping` the saw the bars 8 being se arately and elastically'supported by standards 7, so as to permit this clampin action, and theframe 2 is provided with adjusting screws 32 constituting supports forthe bottom of the saw, said screws having swivel thimbles 32 with slots33 in which the lower edge of the saw rests and t-he screws beingadjusted by trial until the top of the saw is at the proper distanceabove the top member 8 of the carrier frame. To aid 1n such adjustment agage device 34.' may be pivoted to the carrier frame so that it may beturned up, to show the hei ht to which the top of the saw teeth shoulextend in place of the saw and carrier, or it may be turned down out ofthe way when the saw is in place and ready for filing and setting. n

The operation is as follows z-The saw 1s inserted within the frame andthe screw supports 32 are adjusted to hold the saw at the proper level.The saw is then clamped in place either by the elasticity of the framebringing its two parts together against the saw, or by clamping devicesor screws 29. By turning the handle 19 the filing or abrading devicesare operated, and throu h the gearing carrier 2 is pushed longitu inallyon the base and bars 10 thereon are thereby caused to engage theoperating gears 25 of the setting devlces, to automatically operate saiddevices bythe movement of the carrier. In this operation the filingdisks 3 are driven in oppos1te directions so that the transverse strainon the saw is neutralized and each lil ing or cutting projection of eachdisk continually travels obliquely across the saw, in such manner thatit follows up in its oblique movement, the forward movement of the sawteeth and notches, thereby continually filing away the teeth unt-il theyare brought to exact correspondence with the shape determined by theshape of these filing disks. Said disks will be made of hardened steel,carborundum, etc., or other suitable material and will be made removablefrom the arbor and of exact and accurate shape, so that by theiroperation as described the teeth of the saw are brought to uniformdimensions, spacing, and sharpness to a degree not possible with handwork. As the saw is moved inward the teeth are thus set in a from thetip end of the saw and worklng toward the handle and the respectivedisks Il rolling on opposite faces of the saw teeth and theirprojections 28 engage alternately with alten nate teeth of the saw toset the same alternately in opposite directions, and` after the teethare thus .set the are in the further movement of the saw rought intoposition f or the operation of the tiling devices.

lVhat I claim is v l. In a saw filing machine, a base provided withoppositely located standards, one of said .standards being provided witha bracket, a shaft journaled in said standards provided at one end withmeans for rotating it, two bevel wheels on said shaft, two rotary tilingdevices mounted on one of said standards and on opposite sides of saidshaft and operatively connected with one of said gear wheels so as to berotated in opposite directions thereby, a shaft journaled in saidbracket, provided at its lower end with a feed wheel and at its upperend with a bevel wheel in enga ement with the other one of said two bevewheels, and a saw support mounted on the base to slide longitudinallythereof in operative engagement with said feed wheel.

2. In a saw filing and setting machine, a base, oppositely locatedstandards thereon, saw filing mechanism mountedI on one of saidstandards provided with a toothed feed and a saw support mounted'on thebase to 95 slide longitudinally thereof, the upper portion of which isprovided with two racks, one of which is adapted to engage with thetoothed feed wheel and with one of the wheels of the setting mechanismand the other one with the other wheel of the setting mechanism.

3. In a saw filing and setting machine, a base provided with alongitudinal recess to forln ways, two pairs of standards on the base ata distance apart, rotary saw filing mechanism mounted on one pair ofstandards provided with a toothed feed wheel, setting mechanism mountedon the other standards provided with oppositely located toothed wheelsat a distance apart, and a saw supporting frame comprising a basereciprocally located in said recess, pairs of standards rising therefromand two oppositely arranged toothed racks at the upper ends of thelastmentioned standards in position for passing between and engagingwith the toothed wheels of the setting mechanism and one of said racksengaging with the toothed wheel of the filing mechanism.

In testimony whereof, I have hereunto set my hand at Los Angeles,California this 22nd day of November, 1906.

HENRY GORDON WATKINS.

